// 石头剪刀布
// node 2.js rock
// 电脑也会自动随机出一个并输出结果

let playerAction = process.argv[process.argv.length - 1];

// 随机
let random = Math.random() * 3;

let computerAction;

if (random < 1) {
  computerAction = 'rock';
} else if (random > 2) {
  computerAction = 'scissor';
} else {
  computerAction = 'paper';
}

// 比较
if (playerAction === computerAction) {
  console.log('平局');
} else if (
  (playerAction == 'paper' && computerAction == 'scissor') ||
  (playerAction == 'scissor' && computerAction == 'rock') ||
  (playerAction == 'rock' && computerAction == 'paper')
) {
  console.log('你输了');
} else {
  console.log('你赢了');
}
